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Diffstat (limited to 'include/asm-sh/dma.h')
| -rw-r--r-- | include/asm-sh/dma.h | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/include/asm-sh/dma.h b/include/asm-sh/dma.h deleted file mode 100644 index 8e9436093ca..00000000000 --- a/include/asm-sh/dma.h +++ /dev/null @@ -1,143 +0,0 @@ -/* - * include/asm-sh/dma.h - * - * Copyright (C) 2003, 2004 Paul Mundt - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ -#ifndef __ASM_SH_DMA_H -#define __ASM_SH_DMA_H -#ifdef __KERNEL__ - -#include <linux/config.h> -#include <linux/spinlock.h> -#include <linux/wait.h> -#include <linux/sysdev.h> -#include <asm/cpu/dma.h> -#include <asm/semaphore.h> - -/* The maximum address that we can perform a DMA transfer to on this platform */ -/* Don't define MAX_DMA_ADDRESS; it's useless on the SuperH and any - occurrence should be flagged as an error. */ -/* But... */ -/* XXX: This is not applicable to SuperH, just needed for alloc_bootmem */ -#define MAX_DMA_ADDRESS (PAGE_OFFSET+0x10000000) - -#ifdef CONFIG_NR_DMA_CHANNELS -# define MAX_DMA_CHANNELS (CONFIG_NR_DMA_CHANNELS) -#else -# define MAX_DMA_CHANNELS (CONFIG_NR_ONCHIP_DMA_CHANNELS) -#endif - -/* - * Read and write modes can mean drastically different things depending on the - * channel configuration. Consult your DMAC documentation and module - * implementation for further clues. - */ -#define DMA_MODE_READ 0x00 -#define DMA_MODE_WRITE 0x01 -#define DMA_MODE_MASK 0x01 - -#define DMA_AUTOINIT 0x10 - -/* - * DMAC (dma_info) flags - */ -enum { - DMAC_CHANNELS_CONFIGURED = 0x00, - DMAC_CHANNELS_TEI_CAPABLE = 0x01, -}; - -/* - * DMA channel capabilities / flags - */ -enum { - DMA_CONFIGURED = 0x00, - DMA_TEI_CAPABLE = 0x01, -}; - -extern spinlock_t dma_spin_lock; - -struct dma_channel; - -struct dma_ops { - int (*request)(struct dma_channel *chan); - void (*free)(struct dma_channel *chan); - - int (*get_residue)(struct dma_channel *chan); - int (*xfer)(struct dma_channel *chan); - void (*configure)(struct dma_channel *chan, unsigned long flags); -}; - -struct dma_channel { - char dev_id[16]; - - unsigned int chan; - unsigned int mode; - unsigned int count; - - unsigned long sar; - unsigned long dar; - - unsigned long flags; - atomic_t busy; - - struct semaphore sem; - wait_queue_head_t wait_queue; - - struct sys_device dev; -}; - -struct dma_info { - const char *name; - unsigned int nr_channels; - unsigned long flags; - - struct dma_ops *ops; - struct dma_channel *channels; - - struct list_head list; -}; - -#define to_dma_channel(channel) container_of(channel, struct dma_channel, dev) - -/* arch/sh/drivers/dma/dma-api.c */ -extern int dma_xfer(unsigned int chan, unsigned long from, - unsigned long to, size_t size, unsigned int mode); - -#define dma_write(chan, from, to, size) \ - dma_xfer(chan, from, to, size, DMA_MODE_WRITE) -#define dma_write_page(chan, from, to) \ - dma_write(chan, from, to, PAGE_SIZE) - -#define dma_read(chan, from, to, size) \ - dma_xfer(chan, from, to, size, DMA_MODE_READ) -#define dma_read_page(chan, from, to) \ - dma_read(chan, from, to, PAGE_SIZE) - -extern int request_dma(unsigned int chan, const char *dev_id); -extern void free_dma(unsigned int chan); -extern int get_dma_residue(unsigned int chan); -extern struct dma_info *get_dma_info(unsigned int chan); -extern struct dma_channel *get_dma_channel(unsigned int chan); -extern void dma_wait_for_completion(unsigned int chan); -extern void dma_configure_channel(unsigned int chan, unsigned long flags); - -extern int register_dmac(struct dma_info *info); -extern void unregister_dmac(struct dma_info *info); - -#ifdef CONFIG_SYSFS -/* arch/sh/drivers/dma/dma-sysfs.c */ -extern int dma_create_sysfs_files(struct dma_channel *); -#endif - -#ifdef CONFIG_PCI -extern int isa_dma_bridge_buggy; -#else -#define isa_dma_bridge_buggy (0) -#endif - -#endif /* __KERNEL__ */ -#endif /* __ASM_SH_DMA_H */ |